My sister always complains in front of her parents that I don't care about her, but I don't tell her when I'm bored. But I can't talk to her, and she can't help me. What should I do?

It's none of your business, but your cousin is wrong.

Just tell me about your cousin, why she likes to complain so much. You should also talk to your parents and tell them what you really think. Your parents may not take what your cousin said too seriously.

People always get along, and you don't have to speak your mind. Besides, if you tell your cousin everything, your cousin may tell your parents your secret in turn.